6381216873771 has 8 divisors (see below), whose sum is σ = 8508408582720. Its totient is φ = 4254084873672.

The previous prime is 6381216873763. The next prime is 6381216873797. The reversal of 6381216873771 is 1773786121836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6381216873771 - 2³ = 6381216873763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6381216873751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14677245 + ... + 15105758.

It is an arithmetic number, because the mean of its divisors is an integer number (1063551072840).

Almost surely, 2^{6381216873771} is an apocalyptic number.

6381216873771 is a deficient number, since it is larger than the sum of its proper divisors (2127191708949).

6381216873771 is a wasteful number, since it uses less digits than its factorization.

6381216873771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29854425.

The product of its digits is 14224896, while the sum is 60.

The spelling of 6381216873771 in words is "six trillion, three hundred eighty-one billion, two hundred sixteen million, eight hundred seventy-three thousand, seven hundred seventy-one".